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/*
* Copyright (c) 2017-2019 Cisco and/or its affiliates.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <hicn/transport/errors/errors.h>
#include <hicn/transport/http/response.h>
#include <algorithm>
#include <cstring>
namespace transport {
namespace http {
HTTPResponse::HTTPResponse() {}
HTTPResponse::HTTPResponse(const HTTPHeaders &headers,
const HTTPPayload &payload) {
headers_ = headers;
payload_ = payload;
}
const HTTPHeaders &HTTPResponse::getHeaders() {
parse();
return headers_;
}
const HTTPPayload &HTTPResponse::getPayload() {
parse();
return payload_;
}
bool HTTPResponse::parseHeaders() {
const char *crlf2 = "\r\n\r\n";
auto it =
std::search(this->begin(), this->end(), crlf2, crlf2 + strlen(crlf2));
if (it != end()) {
std::stringstream ss;
ss.str(std::string(begin(), it + 1));
std::string line;
getline(ss, line);
std::istringstream line_s(line);
std::string _http_version;
std::string http_version;
line_s >> _http_version;
std::size_t separator;
if ((separator = _http_version.find('/')) != std::string::npos) {
if (_http_version.substr(0, separator) != "HTTP") {
return false;
}
http_version_ =
line.substr(separator + 1, _http_version.length() - separator - 1);
} else {
return false;
}
std::string status_code, status_string;
line_s >> status_code_;
line_s >> status_string;
auto _it = std::search(line.begin(), line.end(), status_string.begin(),
status_string.end());
status_string_ = std::string(_it, line.end() - 1);
std::size_t param_end;
std::size_t value_start;
while (getline(ss, line)) {
if ((param_end = line.find(':')) != std::string::npos) {
value_start = param_end + 1;
if ((value_start) < line.size()) {
if (line[value_start] == ' ') {
value_start++;
}
if (value_start < line.size()) {
headers_[line.substr(0, param_end)] =
line.substr(value_start, line.size() - value_start - 1);
}
}
} else {
return false;
}
}
}
return true;
}
void HTTPResponse::parse() {
if (!parseHeaders()) {
throw errors::RuntimeException("Malformed HTTP response");
}
if (payload_.empty()) {
const char *crlf2 = "\r\n\r\n";
auto it =
std::search(this->begin(), this->end(), crlf2, crlf2 + strlen(crlf2));
if (it != this->end()) {
erase(begin(), it + strlen(crlf2));
payload_ = std::move(*dynamic_cast<std::vector<uint8_t> *>(this));
}
}
}
const std::string &HTTPResponse::getStatusCode() const { return status_code_; }
const std::string &HTTPResponse::getStatusString() const {
return status_string_;
}
const std::string &HTTPResponse::getHttpVersion() const {
return http_version_;
}
} // namespace http
} // namespace transport
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